I have checked following your steps ...but i still get ??? marks in place of Russian text...it may be tht my office tool is not supporting Russian language??
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Manoj ChandranFeb 26 '14 at 7:19

Dont open in excel then ...Just directly load the CSV without opening it in Excel.The problem that happens is excel may not support the Russian character
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Mohith ShrivastavaFeb 26 '14 at 8:12

I need to edit the data ...I tried with open office where it accepts Russian language but once i reopen that document it shows some special characters instead of original data. Salesforce also shows the same special character
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Manoj ChandranFeb 26 '14 at 9:54